knitr ! LATEX! HTML testing September 18, 2012@ 13:10 1 introduction I have been trying to find an Sweave ! LATEX ! HTML pathway that works via knitr ... I think I can get it to work now, although it's not as pretty as I'd like. The bottom line is that to get this working you need to • include render_listings() in an R chunk near the top of your file (I prefer the default highlighting on aesthetic grounds, but this works better with existing LATEX-to-HTML tools) • add \usepackage{graphicx}; \DeclareGraphicsExtension{.pdf}; \usepackage{listings}; \lstset{language=R} to the preamble of your document, and make sure that the Sweavel.sty file is available. • make sure you have myhtml.cfg file available (see the end of this docu- ment) • run htlatex as follows: htlatex $*.tex myhtml "" "" "-interaction=nonstopmode" where (of course) $* is the basename of your document (this line is from a Makefile) 2 example ## normally also include=FALSE r e n d e r l i s t i n g s ( ) (An equation) a + b (1) Some code: ## here'sa comment... ( x 5^ 2) 1 [1] 25 y 17 A figure: set.seed(101) p l o t(rnorm(10), rnorm(10)) 1.5 ● 1.0 ● 0.5 ● 0.0 ● ● rnorm(10) −0.5 ● ● ● −1.0 ● −1.5 ● −2.0 −0.5 0.0 0.5 1.0 rnorm(10) Inline R expression: the value of x is 25. Session info: sessionInfo() R Under development (unstable) (2012-07-27 r60013) Platform: i686-pc-linux-gnu (32-bit) locale : [1] LC_CTYPE=en_CA.utf8 LC_NUMERIC=C 2 [3] LC_TIME=en_CA.utf8 LC_COLLATE=en_CA.utf8 [5] LC_MONETARY=en_CA.utf8 LC_MESSAGES=en_CA.utf8 [7]LC_PAPER=C LC_NAME=C [9] LC_ADDRESS=C LC_TELEPHONE=C [11] LC_MEASUREMENT=en_CA.utf8 LC_IDENTIFICATION=C attached base packages: [1] stats graphics grDevices utils datasets base other attached packages: [1] knitr_0.8 loaded via a namespace (and not attached): [1] digest_0.5.2 evaluate_0.4.2 formatR_0.6 plyr_1.7.1 [5] stringr_0.6 tools_2.16.0 3 issues • The assignment arrow <- inside the Sinput chunk confuses htlatex | have to run htlatex with interaction=nonstopmode (see below) | but the final document seems to come out OK. Is there a fix to Sweavel.sty, or something else, that will make it work? • I don't have pretty syntax highlighting working for htlatex yet. 4 references • From Yihui Xie, about using render_listings() (and the fact that he prefers to start with a markdown document): https://groups.google. com/forum/#!msg/knitr/Dv2JmcDcuBo/dYkp2rEuSlAJ • htlatex image processing: http://tex.stackexchange.com/questions/ 46156/pdf-image-files-and-htlatex • htlatex formatting (I don't have this working right yet): http://tex. stackexchange.com/questions/7216/how-to-get-tex4ht-to-respect-listings-styling-better • more on htlatex/listings formatting (haven't tried this yet): http://tex. stackexchange.com/questions/64054/latex-to-html-preserving-code-coloring-from-listings 5 latexml latexml is an alternative conversion program that I haven't managed to get working equally well . system("latexml −−dest='knitr l i s t i n g s test.xml ' knitr l i s t i n g s t e s t . t e x " ) system("latexmlpost −−dest='knitr l i s t i n g s test.xhtml ' knitr l i s t i n g s t e s t . x m l " ) 3 6 myhtml.cfg \Preamble{html} \begin{document} %% the following is from %% http://tex.stackexchange.com/questions/7216/ %% how-to-get-tex4ht-to-respect-listings-styling-better %% it's supposed to get listings looking nice, but works with %% standard listings output -- rather than output generated by %% Sweavel.sty, which defines new listing environments %% Sinput, Scode, Soutput ... ??? \Css{div.lstinputlisting table.caption { background: rgb(64,128,64); color: white; font-family: sans-serif; padding-right: 100\%; } div.lstinputlisting .pcrro7t- { color: red; } } %% the following is from %% http://tex.stackexchange.com/questions/46156/pdf-image-files-and-htlatex \Configure{graphics*} {pdf} {\Needs{"convert \csname Gin@base\endcsname.pdf \csname Gin@base\endcsname.png"}% \Picture[pict]{\csname Gin@base\endcsname.png}% } \EndPreamble 4.